Terminal for auto internal forging of tubes



A. GRIMM TERMINAL FOR' AUTO INTERNAL FORGING OF TUBES Filed Jan. 10

Patented May Z7, i924.

. fai;

ADA.

Appntanonealea Fanuaryf i110, @19191. serian/nda '27030113 Be fit known.thatrsl, ARTHUR GRIMM; doce torv of dentalis-urgery, a citizen offtheUntedf States, residing.' -fatfv :Nwv "York *city`,`1'in ftheif ventedtnew 1 .and useful Improvement f1 Terminals lfor i Auto *Interna-hForging Tubes, of which thei''ollowing is Ia specifica-ffl;

madein yone' piece, .or-may be madeof. two or more tubes one 41n the`,other-"thus formingI a compound tube,- such a .tube kmaybe of anymetal.or alloyfof elastic properties,.or may befmadeup of-several metals .oralloys,

any size or sizes, and'i'or. anypurposew'vhatsoever. Y

Auto-nemalfforgmg.

By the term autofinternalliiorgingit', l

Terminal."

tube'gto `hold yin thevfluid that is forced in and that is to stretchthe rings or grippers of the said terminal with the Wall or Walls ofsaid tube between said terminals.

F Zuid.

ol." elastic properties.; sucha tube maybe 'ofevento the Ipointfonrupture if needbefl The. greater! thepressure inside `the #tube Lbehindthefter-Ininaflthe harder saidrterminal l01"1 iterf 55 mina'lsiwillrho'ldin: place duetothe -greatei-'2"i eXfpansionof' thehwalls fofsaitlflterminallorf terminals with tthe;'fwallorwva-lls lof' 'saidt'ub''" split as showi'r.'inlliglufe Two, 'anfdwhichallf loW a'spacef'fl (Figs. 1'1, 2. and`3)fbetweenfsaid ring;u or` rings-,nor'grippeifor@gripper f (Figs. f1, 2 'fand'if3) y"and""bodyfoftermii'ia'lf proper?J Eigsl, .2 a'nd'f) Where@ excee'dingly lii'g'h'fsp1-essiuesfarevtofL be' iretainedr inspace 8 andspace '"4 1( l, 2 and3). the terminal 2 (Figs. l, 2 and 3) may be a multiple terminal havingseveral integral peripheral flanges, and grippers; or in other words twoor more terminals one behind the other (in tandem), of which part 2(Figs. l, 2 and 3) is one member for all.

From body of terminal proper 2 (Figs. l, 95 2 and 3) at its outer endprotrudes a small boss 5 (Figs. 1 and 3) that is connected to supplypressure pipe by threads, as shown, or that may be closed by a suitablecap or stopper; and, at center of this boss 10o 5 (Figs. l and 3) is ahole 6 (Figs. l, 2 and 3) that connects at its inner end to space 8(Fig. l) of tube that is to be filled with space et (Figs. 1, 2 and 3)under pressure by fluide As the fluid enters space 8 (Fig. l) of tubethrough hole 6 (Figs. l. 2 and 3) and rises in pressure, it entersanother hole 7 (Figs. l, 2 and 3) and fills up space 4 (Figs l, 2 and 3)with a pressure equal to that in space 8 (Fig. l) thus forcing out slidering or rings, or gripper or grippers, 3 (Figs. l, 2 and 3) against thetube, which ring or rings, or gripper or gripper-s 3 (Figs. l, 2 and 3)thus become homogeneous with the wall or walls of the said tube l (Figs.l and 2), and thus prevent the fluid and the terminal or device to slideout.

Terminal 2 (Figs. l., 2 and 3) may or may not have a nose or rod 9 (Fig.l), extending into space 8 (Fig.v l) so as to reduce the amount of fluidthat is to fill space 8 (Fig. l). Said rod 9 (Fig. l) may be cut up inseveral pieces forming a row of small rods one in front of the other forfacility of handling. Said rod 9 (Fig. l) may or may not be terminals ifsuch are used.

l/Vhen pressure in space 8 (Fig. l) is released, pressure in space l(Figs. l, 2 and B) is also released thus allowing slide ring or rings,or gripper or grippers, 3 (Figs. l, 2 and 3) to spring back and terminalor device to be easily removed if so desired or placed at some otherpoint in tube.

Tube or tubes, or hollow metal bodies, auto-internal-forged with saidterminal are and can be used for medical, surgical, dental, commercialand ordnance purposes.

Although l have shown one specific design for terminals and their tubes,in their simultaneous process of auto-internal-forging, in the figures,yet I wish it understood that I do not restrict myself thereby to anyspecific dimensions or details.

Tubes or hollow metal bodies and their terminal or terminals,auto-internalforged, come under one of those instances where an articleor object as a whole is defined by the method of making it, it beingalmost inn possible to satisfactorilyv define it in any other way. It isfor the above reason that, having described my invention in annexedspecifications, I set forth my claims in terms of the structure itselfas a whole, and, in

terms of the methoc practised in producing that structure.

The claims are intended lo cover and do cover only the saine subjectmatter of my invention of terminals and their tubes simu|- ianeouslyauto-internal-forged, which l claim as new and desire to secure byLetters Patent, viz:

l. A device for auto-internal-forging by fluid pressure, consisting of aterminal and its gripper on its recessed peripheral surface, saidterminal being adapted to lit closely within its tube, and beingprovided with means whereby .fluid pressure may be passed through theterminal from the outer to the inner end thereof, and also with meanswhereby said fluid pressure may be passed from said inner end to saidgripper to operate it to grip and become an homogeneous part of the wallof the tube to secure the whole in position.

2. device for auto-internafl-forging by fluid pressure, consisting of aterminal and its grippers (in tandem) on its recessed peripheral.surface, said terminal being adapted to lit closely within its tube, andbeing provided with means whereby fluid pressure may be passed throughthe terminal from the outer to the inner end thereof, and also withmeans whereby said fluid pressure may be passed from said inner end tosaid grippers to operate them to grip and become homogeneous parts ofthe wall of the tube to secure the whole in position.

3. A device for auto-internal-forging by fluid pressure, consisting of aterminal and its grippers (in tandem) on its several recessed peripheralsurfaces, said terminal being adapted to fit closely within its tube,and being provided with means whereby' fluid pressure may be passedthrough the terminal from the outei` to the inner end thereof, and alsowith means whereby said fluid pressure may he passed from said inner endto said grippers to operate them to grip and become homogeneous parts ofthe wall of the tube to secure the whole in position.

ARTHUR GRIMM.

